16687881

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{479}}^1$

素因数の和:578

約数の個数: 36

約数和(自身を含む): 28454400

約数和(自身を除く): 11766519

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 479, 553, 711, 1437, 1659, 3353, 3871, 4311, 4977, 10059, 11613, 23471, 30177, 34839, 37841, 70413, 113523, 211239, 264887, 340569, 794661, 1854209, 2383983, 5562627, 16687881]

約数ペア:

[(1, 16687881), (3, 5562627), (7, 2383983), (9, 1854209), (21, 794661), (49, 340569), (63, 264887), (79, 211239), (147, 113523), (237, 70413), (441, 37841), (479, 34839), (553, 30177), (711, 23471), (1437, 11613), (1659, 10059), (3353, 4977), (3871, 4311)]